catalog: add catalog-role option to distinguish 'generate' and 'member' roles in the future

doc/configuration.rst

@@ -597,7 +597,7 @@ Catalog zone is handled almost in the same way as a regular zone.
 It can be configured using all the standard options (but for example
 DNSSEC signing would be useless), including master/slave configuration
 and ACLs. Being a catalog zone is indicated by setting the option
-:ref:`zone_catalog-template`. The difference is that standard DNS
+:ref:`zone_catalog-role`. The difference is that standard DNS
 queries to a catalog zone are answered with REFUSED as if such a zone
 wouldn't exist, unless querying over TCP from an address with transfers enabled
 by ACL. The name of the catalog zone is arbitrary. It's however required to

doc/man/knot.conf.5in

@@ -1348,6 +1348,7 @@ zone:
     serial\-policy: increment | unixtime | dateserial
     refresh\-min\-interval: TIME
     refresh\-max\-interval: TIME
+    catalog\-role: none | interpret
     catalog\-template: template_id
     module: STR/STR ...
 .ft P
@@ -1648,9 +1649,28 @@ Forced minimum zone refresh interval to avoid flooding master.
 Forced maximum zone refresh interval.
 .sp
 \fIDefault:\fP not set
+.SS catalog\-role
+.sp
+Trigger zone catalog feature. Possible values:
+.INDENT 0.0
+.IP \(bu 2
+\fBnone\fP – Not a catalog zone.
+.IP \(bu 2
+\fBinterpret\fP – A catalog zone which is loaded from a zone file or XFR,
+and member zones shall be configured based on its contents.
+.UNINDENT
+.sp
+\fIDefault:\fP none
 .SS catalog\-template
 .sp
-This zone is a catalog zone. For the catalog\-member zones, the specified configuration template will be applied.
+For the catalog\-member zones, the specified configuration template will be applied.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+This option must be set if and only if \fI\%catalog\-role\fP is \fIinterpret\fP\&.
+.UNINDENT
+.UNINDENT
 .sp
 \fIDefault:\fP not set
 .SS module

doc/reference.rst

@@ -1478,6 +1478,7 @@ Definition of zones served by the server.
      serial-policy: increment | unixtime | dateserial
      refresh-min-interval: TIME
      refresh-max-interval: TIME
+     catalog-role: none | interpret
      catalog-template: template_id
      module: STR/STR ...
 
@@ -1804,12 +1805,28 @@ Forced maximum zone refresh interval.
 
 *Default:* not set
 
+.. _zone_catalog-role:
+
+catalog-role
+------------
+
+Trigger zone catalog feature. Possible values:
+
+- ``none`` – Not a catalog zone.
+- ``interpret`` – A catalog zone which is loaded from a zone file or XFR,
+  and member zones shall be configured based on its contents.
+
+*Default:* none
+
 .. _zone_catalog-template:
 
 catalog-template
 ----------------
 
-This zone is a catalog zone. For the catalog-member zones, the specified configuration template will be applied.
+For the catalog-member zones, the specified configuration template will be applied.
+
+.. NOTE::
+   This option must be set if and only if :ref:`zone_catalog-role` is *interpret*.
 
 *Default:* not set
 

src/knot/conf/schema.c

@@ -140,6 +140,12 @@ static const knot_lookup_t journal_modes[] = {
 	{ 0, NULL }
 };
 
+static const knot_lookup_t catalog_roles[] = {
+	{ CATALOG_ROLE_NONE,      "none" },
+	{ CATALOG_ROLE_INTERPRET, "interpret" },
+	{ 0, NULL }
+};
+
 static const yp_item_t desc_module[] = {
 	{ C_ID,      YP_TSTR, YP_VNONE, YP_FNONE, { check_module_id } },
 	{ C_FILE,    YP_TSTR, YP_VNONE },
@@ -361,6 +367,7 @@ static const yp_item_t desc_policy[] = {
 	{ C_REFRESH_MAX_INTERVAL,YP_TINT,  YP_VINT = { 2, UINT32_MAX, UINT32_MAX, YP_STIME } }, \
 	{ C_REFRESH_MIN_INTERVAL,YP_TINT,  YP_VINT = { 2, UINT32_MAX, 2, YP_STIME } }, \
 	{ C_ADJUST_THR,          YP_TINT,  YP_VINT = { 1, UINT16_MAX, 1 } }, \
+	{ C_CATALOG_ROLE,        YP_TOPT,  YP_VOPT = { catalog_roles, CATALOG_ROLE_NONE }, FLAGS }, \
 	{ C_CATALOG_TPL,         YP_TREF,  YP_VREF = { C_TPL }, FLAGS, { check_ref } }, \
 	{ C_MODULE,              YP_TDATA, YP_VDATA = { 0, NULL, mod_id_to_bin, mod_id_to_txt }, \
 	                                   YP_FMULTI | FLAGS, { check_modref } }, \

src/knot/conf/schema.h

@@ -33,6 +33,7 @@
 #define C_BLOCK_NOTIFY_XFR	"\x1B""block-notify-after-transfer"
 #define C_CATALOG_DB            "\x0A""catalog-db"
 #define C_CATALOG_DB_MAX_SIZE   "\x13""catalog-db-max-size"
+#define C_CATALOG_ROLE		"\x0C""catalog-role"
 #define C_CATALOG_TPL		"\x10""catalog-template"
 #define C_CDS_CDNSKEY		"\x13""cds-cdnskey-publish"
 #define C_CHK_INTERVAL		"\x0E""check-interval"
@@ -189,6 +190,11 @@ enum {
 	ZONEFILE_LOAD_DIFSE = 3,
 };
 
+enum {
+	CATALOG_ROLE_NONE      = 0,
+	CATALOG_ROLE_INTERPRET = 1,
+};
+
 extern const knot_lookup_t acl_actions[];
 
 extern const yp_item_t conf_schema[];

src/knot/conf/tools.c

@@ -624,6 +624,16 @@ int check_zone(
 		return KNOT_EINVAL;
 	}
 
+	conf_val_t catalog_role = conf_zone_get_txn(args->extra->conf, args->extra->txn,
+	                                            C_CATALOG_ROLE, yp_dname(args->id));
+	conf_val_t catalog_tpl = conf_zone_get_txn(args->extra->conf, args->extra->txn,
+	                                           C_CATALOG_TPL, yp_dname(args->id));
+	if ((bool)(conf_opt(&catalog_role) == CATALOG_ROLE_INTERPRET) !=
+	    (bool)(catalog_tpl.code == KNOT_EOK)) {
+		args->err_str = "'catalog-role' must correspond to configured 'catalog-template'";
+		return KNOT_EINVAL;
+	}
+
 	return KNOT_EOK;
 }
 

tests-extra/tools/dnstest/server.py

@@ -1465,6 +1465,7 @@ class Knot(Server):
                 s.item_str("dnssec-policy", z.dnssec.shared_policy_with or z.name)
 
             if z.catalog:
+                s.item_str("catalog-role", "interpret")
                 s.item_str("catalog-template", "catemplate")
 
             if z.dnssec.validate: